Compress Images
Reduce image file size by up to 90% while keeping photos sharp. Bulk compress JPG, PNG, WEBP and AVIF in your browser – no upload, no limits.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: Compress Image
- Select one or more images.
- Pick a quality level, output format and optional max width.
- Click Start and download the smaller files.
Heavy images slow down websites, fill phone storage and get rejected by upload forms with size limits. FreePDF compresses photos on your own device, so you can shrink hundreds of images – including private photos – without uploading them.
Common uses
- Speed up a website or online store by shrinking product photos.
- Fit photos under upload limits for job, school or visa applications.
- Send many holiday photos by email or chat.
- Free up storage on your phone or cloud drive.
Tips for best results
- Quality 75–85 is usually indistinguishable from the original for photos.
- Converting to WEBP or AVIF often gives the smallest files.
- Resize very large photos (for example 4000 px wide) first – fewer pixels means much smaller files.
Why use FreePDF for Compress Image?
| FreePDF | Typical upload-based sites | |
|---|---|---|
| Files uploaded to a server | No – processed on your device | Yes |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Watermark on output | Never | Sometimes |
| Works offline after loading | Yes, for most tools | No |
Frequently asked questions
How much smaller will my images get?
Typical photos shrink 50–90%. Converting to WEBP or AVIF usually gives the biggest savings. If an image is already optimized, the original is kept so it never gets larger.
How are PNGs compressed?
PNGs are colour-quantized (like TinyPNG) which often halves the size while keeping transparency.
How much can I reduce file size?
Typical photos shrink 50–90%. If an image is already optimised, the original is kept so it never gets larger.
Is Compress Image really free?
Yes. Every tool on FreePDF is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. FreePDF processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. FreePDF works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.